| ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS |
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Relationships of the internodal distance of biological tissue with its sound velocity and attenuation at high frequency in doublet mechanics |
| Cheng Kai-Xuan (程凯旋)a, Wu Rong-Rong (吴融融)a, Liu Xiao-Zhou (刘晓宙)a b, Liu Jie-Hui (刘杰惠)a, Gong Xiu-Fen (龚秀芬)a, Wu Jun-Ru (吴君汝)c |
a Key Laboratory of Modern Acoustics, Institute of Acoustics, Nanjing University, Nanjing 210093, China;
b State Key Laboratory of Acoustics, Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190, China;
c Department of Physics, University of Vermont, Burlington, Vermont 05405, USA |
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Abstract In view of the discrete characteristics of biological tissue, doublet mechanics has demonstrated its advantages in the mathematic description of tissue in terms of high frequency (>10 MHz) ultrasound. In this paper, we take human breast biopsies as an example to study the influence of the internodal distance, a microscope parameter in biological tissue in doublet mechanics, on the sound velocity and attenuation by numerical simulation. The internodal distance causes the sound velocity and attenuation in biological tissue to change with the increase of frequency. The magnitude of such a change in pathological tissue is distinctly different from that in normal tissue, which can be used to differentiate pathological tissue from normal tissue and can depict the diseased tissue structure by obtaining the sound and attenuation distribution in the sample at high ultrasound frequency. A comparison of sensitivity between the doublet model and conventional continuum model is made, indicating that this is a new method of characterizing ultrasound tissue and diagnosing diseases.
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Received: 07 September 2014
Revised: 07 October 2014
Accepted manuscript online:
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PACS:
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43.35.+d
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(Ultrasonics, quantum acoustics, and physical effects of sound)
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43.80.+p
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(Bioacoustics)
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| Fund: Project supported by the National Basic Research Program of China (Grant Nos. 2012CB921504 and 2011CB707902), the National Natural Science Foundation of China (Grant No. 11274166), the Fundamental Research Funds for the Central Universities, China (Grant Nos. 1113020403 and 1101020402), the State Key Laboratory of Acoustics, Chinese Academy of Sciences (Grant No. SKLA201401), the China Postdoctoral Science Foundation (Grant No. 2013M531313), the Priority Academic Program Development of Jiangsu Provincial Higher Education Institutions and Scientific Research Foundation for Returned Overseas Chinese Scholars, State Education Ministry, and the Project of Interdisciplinary Center of Nanjing University, China (Grant No. NJUDC2012004). |
Corresponding Authors:
Liu Xiao-Zhou
E-mail: xzliu@nju.edu.cn
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Cite this article:
Cheng Kai-Xuan (程凯旋), Wu Rong-Rong (吴融融), Liu Xiao-Zhou (刘晓宙), Liu Jie-Hui (刘杰惠), Gong Xiu-Fen (龚秀芬), Wu Jun-Ru (吴君汝) Relationships of the internodal distance of biological tissue with its sound velocity and attenuation at high frequency in doublet mechanics 2015 Chin. Phys. B 24 044302
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